diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 70eebc0..27f88ef 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9)
+cmake_minimum_required(VERSION 3.7)
 project(EWM)
 
 set(CMAKE_C_FLAGS "-O3 -flto")